Server Installation¶

The server runs on Debian 10 VM at https://nuada.zcu.cz/
The ip of the machine is 147.228.173.54

The application was tested on a machine with the following specs:

Hardware requirements¶

• RAM size
  • 768 MB
• Disk size
  • 4 GB
• CPU architecture
  • x86_64

Software requirements¶

• OS, OS version
  • OS: Debian GNU/Linux 10, version 10.9
• Mono, version 5.18.0.240

Deploying the Server Application¶

Building the project¶

At the moment, the easiest way to build the project is to build it locally in Windows with the following commands:
open windows command line (cmd.exe) in the directory where the solution file is located. Please make sure you can run `dotnet` command from the cmd. Make sure you have the right SDK on your system:

dotnet --list-sdks

Version 5.0 is needed to build the project. If you have this version, you can build the project:

dotnet publish --runtime=linux-x64 ServerApp.sln

The built project files are in folder:
.\ServerApp\bin\Debug\net5.0\linux-x64\publish

Note¶

The project could probably be built on-site as well, but that would require .NET SDK to be installed and require larger disc space.

Uploading the project to the remote machine¶

Upload the whole folder built with the commands below:

scp -r /pathToFolder/publish root@{machine_ip}:/<path>/

You can also upload the default configuration file:

scp /path/server_config root@{machine_ip}:/<path>/

Server Configuration File
(or delete this and put link to Project architecture)¶

The configuration file must contain the following lines:

• Site for OpenData (site)
• Data files naming convention (naming_convention)
• Root directory where data files are saved (data_root_dir)
• Port (port)
• Site for weather prediction (weather_site)

These lines must be followed by lines containing the desired values.
Default setting of the config file is as follows:

Site for opendata¶

The site configuration specifies the website where the UWB open data can be downloaded.
It is by default set to http://openstore.zcu.cz/

naming_convention¶

The naming convention specifies how the archives available for download are named.
It is by default set to OD_ZCU_{type}_{month}_{year}_{format}.zip
Variables in this string must keep their name, cannot be excluded and others cannot be added. They must be enclosed in {} brackets. {} characters are treated as special characters and cannot be used as a part of the name.

data_root_dir¶

The data root directory specifies where the downloaded data will be stored. In this root directory subdirectories are created for individual data types.
It is by default set to .\data\auto (relative to the config file's path)

port¶

The port specifies the port number at which the part of the server listens for clients' connections.
It is by default set to 10000

site for weather prediction¶

Furthermore the configuration file can contain link to the site from which the weather prediction is downloaded. Used link must lead to a page with a json file in format that satisfies the format specified on page Data file structure
It is by default set to http://wttr.in/Plzen,czechia?format=j1

Running the server¶

• A folder named data must exist in the directory where the app is launched
• A .p12 file named cert.p12 must exist in the directory where the app is launched
  • We used this one: cert.p12

Firstly you most grant permission to run the executable:

chmod +x <path>/ServerApp

Then you can run the server:

<path>/ServerApp <args>

The path to the server configuration file must be passed as (the only) argument to the application.

Note¶

The shell from which the server application was started must remain open for as long as the server runs. The server does not get forked into background in any way.

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Certificate generation and usage (DEPRECATED)¶

This section provides instructions for generating and using a certificate with a secific port.
Important note: this approach was used when the server application ran under the Mono framework. Mono is no longer used for running the application as it was unable to use some needed libraries.

• Follow these steps if the above stated instructions didn't work as expected.

Mono installation¶

sudo apt install mono-complete

Generating the certificate¶

http://www.mono-project.com/archived/using-clientcertificates-with-xsp/

makecert -r -n "CN=My Own Test CA" -sv root.key root.cer
certmgr --add -c Trust root.cer
hostname (displays the machine's host name)
makecert -iv root.key -ic root.cer -eku 1.3.6.1.5.5.7.3.1 -n "CN={hostname}" -p12 {hostname}.p12 s3kr3t

Linking the certificate to a port?¶

httpcfg -add -port {port} -pvk root.key -cert root.crt

Adding trusted root certificates to the server¶

Copy your CA to dir /usr/local/share/ca-certificates/
Use command: sudo cp foo.crt /usr/local/share/ca-certificates/foo.crt
Update the CA store: sudo update-ca-certificates

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Admin Commands¶

While the server is running, you can type commands into the console. The available commands are as follow:

• data [OPTION] [DATE]...
  • Description: Capable of showing saved data files and downloading new ones.
  • -list: Lists currently saved data files. This list does not have to match the files which any of the predictors is trained on!
    • Example: data -list
  • -dl [startDate] [endDate]: Downloads jis, login and weather files from a specified time span. Both [startDate] and [endDate] are inclusive. Date format must be entered as [month]-[year].
    • Example: data -dl 1-2019 12-2020

• model [OPTION]
  • Description: Capable of retraining the prediction model, going back to the previous version and listing files on which the predictor was trained.
  • -files: Lists the data files on which the currently used model was trained.
    • Example: model -files
  • -retrain: Retrains the model using the files currently saved in the data directory.
    • Example: model -retrain
  • -rollback: Switches the model back to the previous version.
    • Example: model -rollback

• help
  • Description: Lists available commands and their description.

Logging¶

The server logs information about its activity to a file named ------ located in --------